@Betto Regarding tris count, let’s use the Radium suggested level of ~60K tris as base, and possibly add more if necessary (let’s agree that 100K is the top top limit for a ground vehicle in BMS).
But there is one very important thing to keep in mind:
LODing must be efficient and pretty aggressive. When I say aggressive I’m talking mostly about distance. While flying, unless you are doing some external views sight-seeing, most of the time ground vehicles will be seen via the TGP or Maverick IR screen, and ranges will be relatively high (a couple of NMs), so at those situations the models should be efficient and match the necessary visual details (Mostly general shape and bold details).